Improvement in pump-pistons



L. D. HOVEY.

- PUMP-PISTON. No.172,440. Patented Jan. 18, 1876.

WETNESSES N.PETERS PHOTO-LZTHOGRAPHER WASHINGTON, D c, v

UNITED STATES PATENT OFFICE,

LORENZO D. HOVEY, OF CLINTON, ILLINOIS.

IMPROVEMENT IN PUMP-PISTONS.

Specification forming part of Letters Patent No. 172,440, dated January 18, 1876; application filed July 24, 1875.

combination of a beveled or comically-shaped ring, a socket or base ring tapered or beveled interiorly, the leather packing interposed be tween, the bail or guide rods for the valve, the socket for the pump-rod, and lugs for holding the parts together, as hereinafter more fully described.

In the drawing, A represents a ring-shaped base with interior shoulder a and upwardlytapering hearing 1), between which and the ring 0 the conically-shaped packing-ring B of leather, rubber, or other elastic material is- V firmly secured.

The edge of the ring 0 is beveled at a different angle from the tapering outer bearings, so that it acts like a wedge on the interposed packing B. The rings A and O are, preferably, made of metal, and perforated for the U-shaped bail or guide-rods D that pass through the same, and are secured by screw-nuts 61 applied to the lower threaded ends to the bottom of ring A. The upper ends of the guide-rods D are attached to the connecting-socket E of the pump-rod. The ring 0 is held in place chiefly by means of the lugs or rods D, which project down from socket E, and whose lower ends bear against said ring, as shown. The bail or guide-rods D are of such height that a heavy cylindrical valve, F, of wood, or other material, may slide vertically within the same. On ascent of the plunger, its (the valves) leather-lined or otherwise packed bottom bears on the interior Wedgering 0, so as to close the opening through it 

